maven-php-plugin listed twice in pluginManagement of php-parent-pom

[bsagal]

the configuration for maven-php-plugin appears twice in the pluginManagement section of the php-parent-pom pom file, (at lines 76 and 116) and causes the folwing warning

[WARNING] 'build.pluginManagement.plugins.plugin.(groupId:artifactId)' must be unique but found duplicate declaration of plugin org.phpmaven:maven-php-plugin @ org.phpmaven:php-parent-pom:2.0.2, /home/ben/.m2/repository/org/phpmaven/php-parent-pom/2.0.2/php-parent-pom-2.0.2.pom, line 114, column 25
[WARNING] 
[WARNING] It is highly recommended to fix these problems because they threaten the stability of your build.
[WARNING] 
[WARNING] For this reason, future Maven versions might no longer support building such malformed projects.